JEE Main 2016PhysicsWork Power EnergyMediumMCQ

JEE Main 2016 — Work Power Energy Question with Solution

JEE Main 2016 (09 Apr Online)

Question

A car of weight W is on an inclined road that rises by 100 m over a distance of 1km and applies a constant frictional force W20 on the car. While moving uphill on the road at a speed of 10 ms-1 , the car needs power P. If it needs power P2 while moving downhill at speed υ then value of υ is:

Choose an option

Show full solutionCorrect option: C
Correct answer
C15 ms-1

Step-by-step explanation

P=wsin⁡θ+w2010

P=w10+w2010=3w2



P2=3w4=w10-w20v

34=v20

15m/s=v

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About this question

This is a previous-year question from JEE Main 2016, covering the Work Power Energy chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.